Combined periscope and range-finder.



s. N. QSAEGMULLER & (a. A. H. 'KELLNER.

COMBiNEOPERISGOPl-I'AND RANGE FINDER, APPucATmN FILED 020.15.1914.

$08,216. Patented Dec. 12, 1916.

WHWESSES:

MP W,

Zkeir/I TTOR/VEYS UNITED STATES PATENT OFFICE.

GEORGE N. SAEGMULLER. AN D GUSTAV A. HERMANN KELLNEE, OF ROCHESTER, NEWYORK, ASSIGNORS 'I'O' BATISGH & LOMB OPTICAL (30., OF ROCHESTER, NEWYORK, A

CORPORATION on NEW YORK.

COMBINED PERISCOPE AND RANGE-FIZNIDER.

To all whom it may canoe-m:

Be it known that we, Gnonon. N. Sane- MULLER and Gus'rav A. HEaMAnNKnnmznn,

both of Rochester,- in the county of Monroe and State ofNeW York, haveinvented certain new and useful Improvements in Combined Periscopes andRange-Finders; and we do hereby declare the following to be a full,clear, and exact description of the same, reference being bad to theaccompanying drawings, forming a part of this specification, and to thereference-numerals IllILIlCBCl thereon.

Our present invention-has for its obJect to provide an opticalinstrument adapted particularly to be used in conpmct on with underwatercraft or submarines which shall comprise a system of optical elementsforming); a periseope which can be usedfor general observation andanother system of opt-n cal elements forming a range finder for morespecific observations by means of which relative distances maybedeternnned;

- ()ur invention has for its further object to so arrange the respectivesystems of elements that the eyepiece or ocular of the periscope willalso serve as the means of reading the observations appearing m the'ange finder, this end being obtained by the interposingof a movablereflecting element which may be adjusted to directthe rays of lightwhich pass throiugh the range finder into the axis ofthe periscope.

To these and other ends the invention consistsin certain improvementsand combinatinns of parts all as will be hereinafter more fullydescribed, the novel features being pointed out in the claims at the endof the specification. y.

In the drawings: Figure l is a frontview of a head portion of anoptical,instrument constructml in aceordance ,1vithour-"presentinvention, and Fig. 2 is a side elevation thereof.

Similar reference characters in theseveral figures indi'catethe same paits,

posed while its lower end 3 ispositione jfoi convenientsccess tO-theoperator within thd Specification of Letters Patent. Patented 1390.12,1916. Application filed December 16, 1914. Serial No. 877,467.

conning tower of the vessel, parts of the lattor however not beingindicated. The tube 1 contains the perisoopic system of optical elementscomprisinggenerally the objective 4 at theforward side of the head 2,the internal system of lenses and reflectors, as shown in dotted lines,and the e epiece or ocular 5 at the lower end of the to e 1. The latter,it will be understood, mounted for rotative adjustment so that the comlete horizon may be scanned, the rotation 0 the tube being controlled bythe hand wheel 6.

' The range finder is mounted on the upper end of the tube or shell ofthe periscope preferably in proximity to and only a short distance belowthe periscope objective 4, and is disposed with the axis of its opticalelements in a horizontal plane so that they intersect at right anglesthe plane of the axis of the periscopic lens system. The range finder,as indicated by the horizontally disposed tube 7, which is positioned infront of the tube 1-, and carries-at its ends the two objectives 8 and9, contains any preferred arrangement of lenses, reflecting surfaces andscales, by means of which a coincidence of the images formed by the/twoobjectives may be effected, and the distance of the object sighteddetermined.-

The internal parts of the range finder ha ye not been indicated. withthe exception of the centrally disposed ocular or eyepiece 10, shown indotted lines-,- which is disposed in the plane of the axis of theeriscope.

The field of the range finder is smaller than that of the periscopebecause it hasia higher magnification, and -'in order therefore toposition the image of the object sight-ed in the center of the field; ofthe ocular 5 of the periscope we provide an altitude 'adjustn'ient ofthe range finder, as will be further described. To accomplishthis, therange-finder is mounted to swing bodily in anarc described about thecenter of the exit pupil of its eyepiece 10. One means of providing forthis adjustment is to mount the range finder tube 7 eccentrically in awhich is coincident with said exit pupil? The carrier 11 maybe journaledin the bearing 12 of the sleeve 13, rigidly securedon the periscope tube1 and rotatedto change the altitude ofthefield of observation of theobjectives 8 and Q by means of a worm lit) it; which may be adjusted bythe pCPtLt-Ol by the rotation of a shaft 17 journaled in the, tube 1.The worm lll meshes with reel: teeth 16" on the head 11 and upon therotatien of the worm the head turned, or tilted, in its hearing 12 toraise or lower the ohjeetires H amt tl bodily. A collective lens 18 isalso disposed in the axis of theeyepieee lenses It), and cooperates withparts of the optical elements of the periseope to form the imageappearing at said exit pupil in the eyepieee of the periseope.(luiiperating with the eolleetive lens is a rellee'tor, preferably inthe form ul a mirror 15), shown in dotted lines in Fig. 2- whieh issupported upon a suitable frame. adjustable about the pivot 20, so thatit may be mored into and out of the optieal axis of the. periseope. 'lheadjustment of this relleetor may be. aeeomplislmd by a suitablemeehanism sueh as a segmental gear 21 and a eoiiperatmg unrm 2'2 on the.shaft 33, the lower end ut \rliieh is prorided with a hand 'heel limitedin a eonvenieut position for the operator.

In a eombined instrument at tliis ehaw aeter we prefer to employ anarrangement ol optical elements in the. range tinder such as shown inllnited States la'tters iatent No.'tl4tl,l-3T, issued to ()ttoIIppenstoin for coineidenee telemeter, November ML 11705) in whieh theeoineidenee of the two images is obtained by rotating the range tinderin azimuth without requiring the adjustment 01' the usual measuringwedge, and in this type of range tinder it will be understood that therange is determined in the usual manner by the eniiperation oi the.images with the seale bar.

Vt'e elaim as our invention:

1. An optical instrument eomprisiug two systems of optiral elements. onearranged to form a periseope. and the. other arranged to form a rangefinder. loeated with its axis n a plane, intersert'ing that. of theperisrupe, a reflector arranged to reeeire light rays from the rangetinder system and direet them into the rats of the periseope. system.

2. A eombined periseope and range tinder, :aeh comprising the usualcomplement of objective and oeular lenses, said in strmnentz. beingdisposed so that the. optical axis at one iuterseets the axis of thother and means embodying a relleetor disposed to eniipei'ate with the.two ueulars to enable the observe-rat the eyepieee ol' the periseope toobserve the inmg'es termed in the eyepiece ol' the range. tinder.

3. in m optieal instrument, the combination ith a system of verticallydisposed periseope optiral elements and a system of horizontallydisposed range tinder optical elements, the latter being loeated at oneside of the axis of the former. of a reflector adjustably mountedrelatively to the two s vs tems and serving to direct light rays fromthe range tinder system into the axis of the pei'iseopiu system *l. inan optiral instrument, the numbination with a system of perisrnpeoptical elements, and a system of range tinder optieal element thelatter being disposed at one side at and at an angle intersecting theplane oi the axis of the former. ot a eolleetire lens and a relle toreniiperatiug with the range tinder s \'.-;tem and a portion of theperisropie system to render the images 'l'ormed by the range tindersystem visible. in the orular ol' the a-risr'opie system.

5. ln an optieal inst-ruuuait, the. combination with a system ofperiseope optieal elenn-nts mmprising an'oenlar and a system of rangefinder aptieal elements also eoinprising an (u-ular the latter systembeing disposed with its axis in a plane interseeting that ol theperiseopie system, of means tor adjusting the range tinder system foraltitude about th renter oi the exit pupil of it: oeular. and anmljustable relleetor eooperating with the latter to render imagest'ormed therein risible in the oeular of the periseope.

Witnesses:

\l'naaau (l. Wmunrmrrn, Humor Tuna.

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